diff --git a/libs/binder/tests/binderRpcTest.cpp b/libs/binder/tests/binderRpcTest.cpp
index f0400d3..c044d39 100644
--- a/libs/binder/tests/binderRpcTest.cpp
+++ b/libs/binder/tests/binderRpcTest.cpp
@@ -64,12 +64,12 @@
 
 static std::string WaitStatusToString(int wstatus) {
     if (WIFEXITED(wstatus)) {
-        return std::format("exit status {}", WEXITSTATUS(wstatus));
+        return "exit status " + std::to_string(WEXITSTATUS(wstatus));
     }
     if (WIFSIGNALED(wstatus)) {
-        return std::format("term signal {}", WTERMSIG(wstatus));
+        return "term signal " + std::to_string(WTERMSIG(wstatus));
     }
-    return std::format("unexpected state {}", wstatus);
+    return "unexpected state " + std::to_string(wstatus);
 }
 
 static void debugBacktrace(pid_t pid) {
@@ -263,9 +263,8 @@
     bool noKernel = GetParam().noKernel;
 
     std::string path = GetExecutableDirectory();
-    auto servicePath =
-            std::format("{}/binder_rpc_test_service{}{}", path,
-                        singleThreaded ? "_single_threaded" : "", noKernel ? "_no_kernel" : "");
+    auto servicePath = path + "/binder_rpc_test_service" +
+            (singleThreaded ? "_single_threaded" : "") + (noKernel ? "_no_kernel" : "");
 
     unique_fd bootstrapClientFd, socketFd;
 
diff --git a/libs/binder/tests/binderRpcTestCommon.h b/libs/binder/tests/binderRpcTestCommon.h
index dfce441..acc0373 100644
--- a/libs/binder/tests/binderRpcTestCommon.h
+++ b/libs/binder/tests/binderRpcTestCommon.h
@@ -60,7 +60,6 @@
 #include "../FdUtils.h"
 #include "../RpcState.h" // for debugging
 #include "FileUtils.h"
-#include "format.h"
 #include "utils/Errors.h"
 
 namespace android {
@@ -99,7 +98,7 @@
 }
 
 static inline std::string trustyIpcPort(uint32_t serverVersion) {
-    return std::format("com.android.trusty.binderRpcTestService.V{}", serverVersion);
+    return "com.android.trusty.binderRpcTestService.V" + std::to_string(serverVersion);
 }
 
 enum class SocketType {
diff --git a/libs/binder/tests/format.h b/libs/binder/tests/format.h
deleted file mode 100644
index c588de7..0000000
--- a/libs/binder/tests/format.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// TODO(b/302723053): remove this header and replace with <format> once b/175635923 is done
-// ETA for this blocker is 2023-10-27~2023-11-10.
-// Also, remember to remove fmtlib's format.cc from trusty makefiles.
-
-#if __has_include(<format>) && !defined(_LIBCPP_HAS_NO_INCOMPLETE_FORMAT)
-#include <format>
-#else
-#include <fmt/format.h>
-
-namespace std {
-using fmt::format;
-}
-#endif
\ No newline at end of file